Computing Technology Industry Association’s poll of 400 IT and business professionals that found that almost half of organizations that use managed IT services say they’ve reduced their IT budgets by 25 percent by using managed services. Additionally, 13 percent of respondents estimated their savings to be 50 percent or more.
Source: http://www.channelinsider.com/c/a/Commentary/Do-Managed-Services-Really-Save-Money-608662